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authorWANG Cong <xiyou.wangcong@gmail.com>2016-02-25 14:55:01 -0800
committerDavid S. Miller <davem@davemloft.net>2016-02-29 17:02:33 -0500
commit2ccccf5fb43ff62b2b96cc58d95fc0b3596516e4 (patch)
treed73ec90b0c0cfd1191ef35a4aa0eaea78af1f100 /net/sched/sch_sfb.c
parentnet_sched: introduce qdisc_replace() helper (diff)
downloadlinux-dev-2ccccf5fb43ff62b2b96cc58d95fc0b3596516e4.tar.xz
linux-dev-2ccccf5fb43ff62b2b96cc58d95fc0b3596516e4.zip
net_sched: update hierarchical backlog too
When the bottom qdisc decides to, for example, drop some packet, it calls qdisc_tree_decrease_qlen() to update the queue length for all its ancestors, we need to update the backlog too to keep the stats on root qdisc accurate. Cc: Jamal Hadi Salim <jhs@mojatatu.com> Acked-by: Jamal Hadi Salim <jhs@mojatatu.com> Signed-off-by: Cong Wang <xiyou.wangcong@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/sched/sch_sfb.c')
-rw-r--r--net/sched/sch_sfb.c3
1 files changed, 2 insertions, 1 deletions
diff --git a/net/sched/sch_sfb.c b/net/sched/sch_sfb.c
index 0e74e55fda15..c69611640fa5 100644
--- a/net/sched/sch_sfb.c
+++ b/net/sched/sch_sfb.c
@@ -510,7 +510,8 @@ static int sfb_change(struct Qdisc *sch, struct nlattr *opt)
sch_tree_lock(sch);
- qdisc_tree_decrease_qlen(q->qdisc, q->qdisc->q.qlen);
+ qdisc_tree_reduce_backlog(q->qdisc, q->qdisc->q.qlen,
+ q->qdisc->qstats.backlog);
qdisc_destroy(q->qdisc);
q->qdisc = child;